diff options
Diffstat (limited to 'src/floatfns.c')
| -rw-r--r-- | src/floatfns.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/floatfns.c b/src/floatfns.c index 22376846c94..f2b3b13acd8 100644 --- a/src/floatfns.c +++ b/src/floatfns.c @@ -347,6 +347,21 @@ int double_integer_scale (double d) { int exponent = ilogb (d); +#ifdef HAIKU + /* On Haiku, the values returned by ilogb are nonsensical when + confronted with tiny numbers, inf, or NaN, which breaks the trick + used by code on other platforms, so we have to test for each case + manually, and return the appropriate value. */ + if (exponent == FP_ILOGB0) + { + if (isnan (d)) + return (DBL_MANT_DIG - DBL_MIN_EXP) + 2; + if (isinf (d)) + return (DBL_MANT_DIG - DBL_MIN_EXP) + 1; + + return (DBL_MANT_DIG - DBL_MIN_EXP); + } +#endif return (DBL_MIN_EXP - 1 <= exponent && exponent < INT_MAX ? DBL_MANT_DIG - 1 - exponent : (DBL_MANT_DIG - DBL_MIN_EXP |